1、检查主电源是否通电，如不通电，确定是否保险丝烧掉。
1. Check whether the main power supply is electrified, if not, determine whether the fuse is burnt.
2、检查主板是否有电，如没有检测主板供电电源是否有问题。
2. Check whether the motherboard has electricity or not, if there is no problem with the power supply of the motherboard.
3、检查电机是否有电，如没有检测电机供电电源是否有问题。
3. Check whether there is electricity in the motor, such as whether there is a problem in the power supply of the motor.
4、以上如果都检测有电，软件连接不上就确定是主板问题。
4. If all of the above are detected to be electrified, the software can not be connected to determine that it is the motherboard problem.